Lawmakers from both parties have said the fencing, which was erected after the Jan. 6 insurrection, should come down before Friday's attack that killed a Capitol police officer.
A tweet sent from the U.S. Capitol Police account said that officers are responding to reports of a ramming of two officers at one of the vehicle access points to the grounds.
Lawmakers from both parties have decried the fencing, which was erected following the Jan. 6 insurrection, as unsightly, expensive and beyond what is necessary.
So far, lawmakers have focused on the lack of clear intelligence about the plans of the rioters, given that Trump's supporters openly discussed the insurrection online.
The House had been scheduled to debate and vote on a police reform bill on Thursday.
The Capitol Police said it already has made "significant security upgrades" at the Capitol, home to the U.S. House of Representatives and Senate.
Pittman's testimony, submitted ahead of a House hearing on Thursday, provides the most detailed account yet of the intelligence and preparations by U.S. Capitol Police.
Much remains unknown about what happened before and during the assault, and lawmakers are expected to aggressively question the former officials about what went wrong.
By unanimous consent, the Senate passed a measure to give the Congressional Gold Medal to officer Eugene Goodman of the U.S. Capitol Police force.
Most of the officers have not been publicly identified; only a few have been charged. Some were identified by online sleuths.
Several officers said they were given next to no warning by leadership on the morning of Jan. 6 about what would become a growing force of thousands of rioters.
The FBI is warning of plans for armed protests at all 50 state capitals and in Washington, D.C., in the days leading up to President-elect Joe Biden’s inauguration.
Only one lawmaker was known to have gotten inside the Capitol and since was charged with a crime and resigned.
Sicknick’s death has shaken America as it grapples with how an armed mob could storm the halls of the U.S. Capitol as the presidential election results were being certified
The statement was accompanied by an image of a masked suspect wearing gloves and a hooded sweatshirt, carrying an object.
The U.S. Capitol Police said Officer Brian D. Sicknick was injured "while physically engaging with protesters" during the Wednesday riot, later dying in hospital.
The siege of the Capitol, home to both the U.S. Senate and the House of Representatives, represents one of the gravest security lapses in recent U.S. history.
Democrats said it appeared Capitol police were not prepared for the violent breaching of the government building, with some suggesting there could be firings and other punishments.